I've only just seen this old query, but here's a couple of thoughts.
I was originally crewing and later crewchief with Pete Crane on Stormbringer during the early to late 70's. That car was an ex-Cannon & Soares rail brought over via Roy Phelps in 1974. This is obviously not that car, but what people may not know is that Roy & Bob Phelps plus Alan Herridge studied the chassis and Asphalt Alleygator, Ronnie Picardo's Highway Patrol and Roz Prior's Maneater were all based on Stormbringer, but with modifications, one of which was a nose very like the car in the picture. Again, this is not any of these cars but it is possible this chassis was made as a show car and never raced or a project for someone who never raced the car. The wheelbase on Stormbringer was 218 inches if that helps. The wing and rollcage look very similar to Stormbringer.
This might be STBO but has anyone contacted Roy Phelps to see whether he can shed some light?